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Message-ID: <4B4277B0.1080506@redhat.com> Date: Mon, 04 Jan 2010 18:20:16 -0500 From: Rik van Riel <riel@...hat.com> To: Peter Zijlstra <peterz@...radead.org> CC: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "minchan.kim@...il.com" <minchan.kim@...il.com>, cl@...ux-foundation.org, "hugh.dickins" <hugh.dickins@...cali.co.uk>, Nick Piggin <nickpiggin@...oo.com.au>, Ingo Molnar <mingo@...e.hu>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [RFC][PATCH 0/8] Speculative pagefault -v3 On 01/04/2010 04:46 PM, Peter Zijlstra wrote: > On Mon, 2010-01-04 at 16:41 -0500, Rik van Riel wrote: >> On 01/04/2010 01:24 PM, Peter Zijlstra wrote: >>> Patch series implementing speculative page faults for x86. >> >> Fun, but why do we need this? > > People were once again concerned with mmap_sem contention on threaded > apps on large machines. Kame-san posted some patches, but I felt they > weren't quite crazy enough ;-) In that case, I assume that somebody else (maybe Kame-san or Christoph) will end up posting a benchmark that shows how these patches help. -- All rights reversed. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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